Rotary suction-ventilator.



J. 1110x112 @A. F. WILLIAMS;

ROTARY SUCTION VENTILATOR. Arrmbuxon nngn we. 1, 1902;

No. 730,099. I PATBNTED JUNE 2,1903.)

K0 MODEL.

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g the same parts are indicated by the same let- UNITED STATES JOHN DICKIE AND ALEXANDEE? F.

Patented June 2, 1903.

WILLIAMS, OF BUTTE, MONTANA.

ROTARY SUC-TlO'N-VENTlLAT-OR.

SPECIFICATION forming part of Letters Patent No. 730,099, dated June 2, 1903.

Application filed August 1, 1902;

To all whom it may concern.-

Be it known that we, JOHN DIOKIE and ALEXANDER F. WILLIAMS, citizens of the United States, residing at Butte, in the county of Silverbow and State of Montana, have in-- vented certain new and useful Improvements I in RotarySuction-Ventilators; and we do hereby declare the following to be a full,clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use'the same.

Our invention relates to improvements in rotary suction-ventilators.

It consists of an improved suction-ventilator acting on the centrifugal principle in" which the air to be drawn out is sucked into the center of the ventilator and is thrown outward from radial and expanding passages.

The invention is intended more especially to draw foul air out of mines, ships, or other partly-closed chambers or cavities, allowing fresh air to flow in and replace that which is sucked out.

Our invention will be understood by reference to the accompanying drawings, in which ters throughout the several views.

Figure 1 is an endview, partly in section, of the improved ventilator-.- Fig.2 represents a section along the lines 2 2'of Fig. 1. Fig. 3 represents the cruciform deflector used in the center of the hub, and Fig. 4 is a perspective view of one of the rotary blades.

A represents a hub chambered at A and provided with four radial passages connecting'with the passages in the blades. To one end of the hub the shaft B is screwed, which is governed by the pulley D. This shaft is mounted in a bushing c in the block 0 and may be lubricated, as through the holes 0 In the opposite end of the hub A the hollow shaft B is screwed, which is journaled in the bushing c in the block 0. This block projects outward, as at 0 and is screw-threaded to receive the union E, into which union the pipe F is screwed. This pipe leads to that part of the mine, vessel, orchamber from which the impure air is to be exhausted.

In the chamber A of the hub A is mountedthe cruciform deflector G, which serves to distribute the air to the four radial passages.

terminating in a cutting edge 70.

-are provided with rivet-holes 7c the passages creased from the peculiar shape of these passages and also from the fact that the face It recedes inward, causing a partial vacuum to The hollow shanks Hare screwed into the Serial No. 118,005. (No model:

I walls of the said radial passages in the hub A, and to these shanks Hthe blades K are secured, as by means of the pins or rivets k.

These blades or 'vanes K are provided with inclined front faces 7c, terminating in a cutting edge 10 and with'inclined rear faces k The sides of they vanes or blades are preferably fiat and and 10 through which pass the rivets 7c and lc ,respectively. The outer edge of the vane slopes from rear tofront, terminating in a point is.

Since the vanes are driven ata high rate of speed and there would be a tendency for them to fly out radially or to shake loose ina foreprovide stifiening-rings L, which are connected to each of the blades by means of the rivets 10 The passage in the vane is ellipsoidal in cross-section and and-aft direction, we

expands outward.

The vanes are driven in the direction 1ndi-' cated by the arrows in Fig. l. The operation of this is as follows: The shaft B and hub A being rapidly rotated by means of the pulleys D, a partial-vacuum will be set up in in the vanes, which will be intake 'place behind the same when the vane is rapidly rotated. The partial vacuum set up,

"rotating the apparatus as just described, will cause theair to flow from the pipe Finto the chamber in the hub A, where it will be deflected by the cruciform deflector G to the several radial passages, and quite a strong draft will promptly be set up through the pipe F and outto the open air through these radial vanes. By having the vanes with cutting edges in front and behind the resistance of the air on the apparatus will be materially decreased, and thus there will be considerable saving in motive power.

Having thus described our invention, what we claim, and desire to secure by Letters Patent of the United States, is-' 1. A suction-ventilator, comprising a hub hollow ing from said central cavity, a hollow shaft forming one of the journals of said hub, and radial vanes having cutting edges in the front and rear with an expanding passage therein the center with radial passages lead-' through elliptical in cross-section, said vanes being mounted over said radial passages in the hub, substantially as described.

2. A suction-ventilator, comprising a hub hollow in the center wi th radial passages leading from said central cavity, a hollow shaft forming one of the journals of said hub, and radial vanes, each having an expanding passage therethrough, secured to said hub over said radial passages and each of said vanes having angnlarly-disposed outer surfaces merging into front and rear cutting edges.

A suction-ventilator, comprising a hub hollow in the center with radial passages leading from said central cavity, a hollow shaft forming one of the journals of said hub, and radial vanes, each having an expanding passage therethrough elliptical in cross-section, secured to said hub over said radial passages, said vanes having angularly-disposed outer surfaces merging into front and rear cutting edges.

4. A suction-ventilator, comprising a hub hollow in the center with radial passages leading from said central cavity, a hollow shaft forming one of the journals of said hub, a cruciform deflector mounted in the central cavity in said hub, and radial vanes having an expanding passage therethrough secured to said hub over said radial passage, substantially as described.

5. A suction-ventilator, comprising a hub hollow in the cen ter with radial passages leading from said central cavity, a hollow shaft forming one of the journals of said hub, a cruciform deflector mounted in the central cavity in said hub, and radial vanes having cutting edges in the front and rear with an expanding passage therethrough elliptical in cross-section, said vanes being mounted over said radial passages in the hub, substantially as described.

6. A suction-ventilator, comprising a hub hollow in the center with radial passages leading from said central cavity with means for rotating said hub, a hollow shaft forming one of the journals of said hub, radial vanes having angularly-disposed outer surfaces merging into cutting edges in the front and rear with an expanding passage therethrough elliptical in cross-section, said vanes being mounted over said radial passages in the hub, and stifi'ening-rings connecting said vanes, substantially as described.

7. A suction-ventilator, comprising a hub hollowin the center with radial passages leading from said central cavity with means for rotating said hub, a hollow shaft forming one of the journals of said hub, a cruciform deflector mounted in the central cavity in said hub, radial vanes having an expanding passage therethrough secured to said hub over said radial passage and stiffening-rings connecting said vanes, substantially as described.

8. A suction-ventilator, comprising a hub hollow in the center with radial passages leading from said central cavity with means for rotating said hub, a hollow shaft forming one of the journals of said hub, a cruciform deflector mounted'in the central cavity in said hub, radial vanes having cutting edges in the front and rear with an expanding passage therethrough elliptical in cross-section, said vanes being mounted over said radial passages in the hub, and stiffening-rings connecting said vanes,substantially as described.

9. A suction-ventilator, comprising a hub hollow in the center with radial passages leading from said central cavity, a hollow shaft forming one of the journals of said hub, a cruciform deflector mounted in the central cavity in said hub, and radial vanes each having an air-passage therethrough, secured to said hub over said radial passage, substantially as described.

10. Asuction-ventilator, comprising a hub hollow in the center with radial passages leading from said central cavity, a hollow shaft forming one of the journals of said hub, a cruciform deflector mounted in the central cavity in said hub, and radial vanes having cutting edges in the front and rear, each having an air-passage therethrongh, said vanes being mounted over said radial passages in the hub, substantially as described.

11. A suction-ventilator, comprising a hub provided with a central cavity with radial passages leading therefrom, a hollow shaft forming one of the journals of said hub, and radial vanes,each having an air-passage therethrough, secured to said hub over said radial passages, said vanes having front and rear cutting edges and an end surface sloping from the front to the rear cutting edge.

12. A suction-ventilator, comprising a hub provided with a central cavity with radial passages leading therefrom, a hollow shaft forming one of the journals of said hub, and radial vanes, each provided with passages longitudinally therethrough, secured to said hub over said radial passages, said vanes having angularly-disposed outer side surfaces merging into front and rear cutting edges and an end surface sloping from the front to the rear cutting edge.

13. A suction-ventilator, comprisinga hub having a central cavity with radial passages leading therefrom, a hollow shaft forming one of the journals of said hub, and radial vanes, each having an expanding passage longitudinally therethrough elliptical in cross-section, secured to said hub over said radial passages, said vanes having angularly-disposed outer side surfaces merging into front and rear cutting edges and an end surface sloping from the front to the rear cutting edge.

14. A suction-ventilator, comprising a hub having a central cavity with radial passages leading therefrom, a hollow shaft forming one of the journals of said hub, a cruciform deflector mounted in said central cavity, and radial vanes each having an air-passage longitudinally therethrough secured to said hub over said radial passages, said vanes having ICO angularly-disposed outer surfaces merging into front and rear cutting edges.

15. A suction-ventilator, comprising a hub having a central cavity with radial passages leadin g therefrom, a hollow shaft forming one of the journals of said hub, a cruciform deflector mounted in said central cavity, radial vanes each having an air-passage longitudinally therethrough secured to said hub over said radial passages, said vanes having angnlarly-di sposed outer surfaces-merging into front and rear cutting edges, and an end surfacesloping from the front to the rear cutting edge.

In testimony whereof we afiix our signa- I5 i tures in presence of two witnesses.

JOHNIYDIOKIE. ALEX. F. WILLIAMS..

Witnesses:

' J. R. CREIGHTON,

HUGH McGEE. 

